23218336576421 has 32 divisors (see below), whose sum is σ = 27953264486400. Its totient is φ = 18854562767040.

The previous prime is 23218336576411. The next prime is 23218336576493. The reversal of 23218336576421 is 12467563381232.

It is not a de Polignac number, because 23218336576421 - 2¹⁴ = 23218336560037 is a prime.

It is a super-3 number, since 3×23218336576421³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23218336576411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47684090 + ... + 48168548.

It is an arithmetic number, because the mean of its divisors is an integer number (873539515200).

Almost surely, 2^{23218336576421} is an apocalyptic number.

It is an amenable number.

23218336576421 is a deficient number, since it is larger than the sum of its proper divisors (4734927909979).

23218336576421 is a wasteful number, since it uses less digits than its factorization.

23218336576421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487329.

The product of its digits is 8709120, while the sum is 53.

The spelling of 23218336576421 in words is "twenty-three trillion, two hundred eighteen billion, three hundred thirty-six million, five hundred seventy-six thousand, four hundred twenty-one".